Hello,


I'm trying to create an effect where a force progressively interact with a fractured object.

To achieve that I do it this way :

• Sphere
  
  
• RBDmaterialfracture
  
  
• Assemble to create packed primitives
  
  
• Attribute wrangle :
  
  

  float amp = chf('amplitude');
  
  vector fadein = {0, 0, 0};
  
  fadein = set(amp,0,0);
  
  v@fadein = fadein;
  

  
  
  
• RBDbulletsolver.
  
  Inside that solver a Pop force. Everything works well when I keyframe the Force manually.
  
  But when I create a VEX expression though :
  

  force = v@fadein ;

  
  

it doesn't actualise every frame but only take the value of the fadein vector at the first frame.

What am I missing ?

By the way is it the best way to achieve this effect ? Or a multisolver with Pop and bullet would be best ?

Thank you !

Hello Raph, animated attributes should be added to the Override attribute list in your RBDBulletSolver so that they're copied to your simulated geometry from your input at every frame:

Oh perfect, thank you so much !